Roll grinder and polisher



, Feb. 8, 1949.

Filed Aug. 6, 1946 2 Sheets-Sheet l Feb. 8, 1949. w. H. WILKES ROLLGRINDER AND POLISHER 2 Sheets-Sheet? Filed Aug. 6, 1946 Patented Feb. 8194 ROLL GRINDER AND POLISHER William Henry Wilkes, Florence, N. J.,assignor to Wm. B. Thropp & Sons 00., Trenton, N. J., a corporation ofNew Jersey Application August 6, 1946, Serial No. 688,789

10 Claims.

This invention relates to new and useful improvements in roll grindingand polishing devices, and more particularly to devices for polishingand resurfacing rolls and like mills such as, for example, those used innumerous manufacturing and industrial processes.

In the manufacture and processing of many products the material ormaterials are passed be.- tween cooperating pairs of rolls suitablyspaced apart and positioned to perform a particularoperation upon thematerials passed therebetween.

In most cases it is essential that the surface of these rolls bemaintained smooth and true, andthis requires that the rolls be groundand polished from time to time as required. Furthermore, it is desirablethat this refinishing of the surface of the rolls be carried out at theplace where the rolls are installed in order to save the time thatotherwise would be lost to dismantling the mill and returning the rollsto the factory where made for such refinishing.

With the foregoing in mind, the principal object of the presentinvention is to provide a novel grinding and polishing device for rollswhich is portable and may be used to refinish and resurface rolls in thefield without removing the rolls or dismantling the mill in whichincorporated.

Another object of the invention is to provide a :novel grinding andpolishing device of the character set forth which may be readily andeasily :applied to the rolls of a mill to resurface or refinish the sameand then be quickly and easily removed therefrom.

Another object of the invention is to provide a grinding and polishingdevice of the stated type having novel features of construction andarrangement for securing and adjusting therein the abrasive members.

A further object of the invention is to provide a novel and improvedgrinding and polishing device of the type described embodying relativelyopposedsets of abrasive members together with means for controllingcontact thereof with the surfaces of the rolls.

. Still a further object of the invention is to provide a novel grindingand polishing device having the characteristics and features set forthwhich is of relatively simplified and inexpensive construction andhighly effective and eflicient in operation and use. 7

These and other objects of the invention and the various features anddetails of the construction, operation and use thereof are hereinafterfully set forth and described with reference to the accompanyingdrawings in which:

Fig. i is an elevational view showing a rolling mill having operativelyassociated therewith a grinding and polishing device made according tothe present invention;

Fig. 2 is an enlarged fragmentary sectional view taken on line 2-2; Fig.1;

.Fig 3 is an enlarged sectional view taken on 1ine33, Fig. 2, and y r VFig. 4 is an exploded perspective view showing the operativerelationship of certain parts of the device illustrated in Fig. 3. r

Referring, now more particularly to the drawings, the present inventionis shown as applied to an ordinary roll mill wherein reference numeralsl andz designate the standards of the mill frame, and numerals 3 and 4designate the upper and lower rolls, respectively,

With reference more particularly to Fig. 2 of the drawings; a. grindingand polishing device made according to the present invention com.-prises a pair of carriers 5 which are constructed and arranged fordisposition at opposite sides of the bite of the upper and lower rolls 3and i in the relationship" shown in the drawings. Each of the carriers 5includes a pair of oppflsitely ar: ranged abrasive block supportingportions 6 of arcuate configuration conforming substantially to thecurvature of the mill rolls 3 and 4, respectively, and disposedcentrally and outwardly of these support portions 6 is an integralvertically extending flange portion 1.

The two carriers 5 are retained in the positions shown at opposite sidesof the bite of the rolls 3'and t by means oia tie-rod or the like 8which extends between the said rolls and through suitably alignedpassages s provided in the flanges l of the carriers 5. The outer endportions of the tie-rod 8 are threaded as indicated at Ill and H,respectively, to receive thereon an adjustable stop memberlz and anadjusting hand wheel l3. The

mid portion of the tie-rod 3 is reduced in diam:

eter as shown at Hi to receive sleeve or tubular shield l5 of plastic orother suitable material that will serve to prevent damage to the rollssuch as scratching or scarring of the surfaces thereof being ground orpolished.

As shown in Fig. 2 of the drawings; each of the arcuate support portions5 of the carriers Sis provided with a pair of recesses 16 adapted toremovably receive therein abrasive blocks or the like I! selectedaccording to the particular grinding or polishing operation to beperformed. These recesses extend horizontally or transversely of thecarriers 5 in ciroumferentially spaced relation with respect to thearcuate configuration of said supports 6 and the rolls 3 and 4. It is tobe noted with reference to Fig. 3 that in the directioncircumferentially of the rolls 3 and l the recesses 16 are ofsubstantially greater width than the abrasive members I! and that whilethelvinher wall {8 of each recess "f6 lies'in a plane 'p'erperididulairto the side faces Biz and 6b of the support portions 6, the outer wallIQ of each recess is angularly disposed as indicated to provide atapered space between it and the block l? for the reception of a wedgeelement 28 that serves to clamp the abrasive block andretainit firmlywith the recess ['6 a'gaiiist"'accidental displacement.

The wedge element 28 may be loosened or tightened with respect to theabrasive block I! by means of a screw or the like 2! threadediiito atapped bore 22 arranged as shown in the support portion 6andc'ounterbored as indicated at 23 to receive the head 24 0f the screw2| which also'engages withina relatively shallow arcuate "recess '25provided 'in the wedge element 20. By this COnstructionitWill beobserved that as the screw 2| is threaded inwardly or outwardly ofthebores 22 andZS so'also will the wedge element 2E3 be moved inwardlyoar-outwardly with respect to the recess IE and the member I! therebyclamping the latter more firmly in the carrier or releasing'it, as thecase maybe.

The 'inner face of each abrasive block I1 is adapted to seat or abutagain'st a backing plate 26 disposed inthe recess 16 and provided withears. 2'! at its opposite ends which outwardly lap the side faces 6a and6b of the carrier support portions 6 and are provided with radiallyextending slots 23 that slidably receive screws or the like 29 whichlimit the extent of radial movementof the plate '26 and may be tightenedto secure the said plate in aselected position within said: limits.Pairs-of set screws 3d having lock nuts. 3i are mounted in the supportposition. 6 of the carriers5 at opposite sides of the flange I thepresent invention provides a novel grinding andpolishing device which isportable and may be'used effectively to refinish and resurface rolls in'tlr'e field. The invention also provides a de- -"vice "crane stated typewhich embodies novel features of construction and arrangement forsecuring and adjusting therein the abrasive mem- The invention furtherprovides a novel grinding and polishing device having the features and.characteristics-herein described which is of relatively simplified andinexpensive .=construction and highly effective and efiicient-ainoperation 1 and use.

. While a particular embodimentof the invention has been illustrated anddescribed'herein, it is not intended to limit the inventionito suchdisclosure, and changes and modifications may be made therein andtheretowithinthevscope of the claims.

I claim: V r p 1. In a portable grinding or polishing device iorrolis,apair of carriers adapted tc be positionedat respectively oppositesidesoi- -thabite of a pair of rolls and having arcu-ate support portionsarranged substantially to-conf or m to the curvature of the rolls,andmeansassociatedtwith said carriers andarranged to extend-between saidrolls to support the carriers relative to; the

= rolls.

.thereofand'arranged in themanner shown to engage inwardly against thebacking'plate 26 as shown inithe. broken away and sectional portions ofFig.2 of thedrawingsr Thus it will bejapparent that theseveral screws2!,529 and -3.l maybe manipulatedv to variously positionthe abrasiveblocks IT- radially within their recesses 15- asthe particular job mayrequire, and that the s crewsgll may, be manipulated to release theblocks I'ljf-or removal and replacement'or substitution and then besecurely clamped in fixed position in the recesses 'lfi'of thecarriers 5as required or desired. V

The device may be readily and easily mounted incooperative associationwithapair oirolls, forexample, mereiy by removing the hand; wheel I3 andthe adjacent carrier 5 ircm the tie-rod 8 and then passingthelatterbetween the rolls 3 and} from the other side of the. bite thereof afterwhich the removed carrier may be replaced together with the hand wheell3. Assuming that .the abrasive blocks I! are properlylposi- .tionedwithin the recesses lfiythe rolls's and 4 may be rotated and-when up tospeed the hand wheel l3, may be adjusted to place the several abrasiveblocks Iiiinto contact with the surfaces of the rolls 3 and 4 atthepressure desired. In the event only one of the rolls is to besurfaced the; abrasive blocks if! associated with the other roll may bereplaced with .plain hard wood blocks orthe like.

2, 11 9; portable grinding orpolishing device for rolls, a pair ofcarriers adapted -to be;positioned at respectively opposite sides of thebite of a pair of rolls and having arcuate support portions arrangedsubstantially to conformto thecurvature of the rolls, abrasive memberscarried by saidcari ier support portions and iar- -ranged to engage thesurfaces of said rollfs,means arranged'to extend between the rollsandlinterconnectingsaid carriers-to support the same relatlve totherolls, and means operablelto. adjust the said carriers relative toone-lanotherand thereby regulate the contact of saidabra'sive memberswith said rolls.

3. In a portable grinding or 'poli'shinggfdevice' ior rolls, a pairofcarriers adapted td .be' positioned at'frespectivelyopposite sides of jithe bite I of a pair of rolls 'and'having arcliate support'portionsarrar'iged sub'staritially to conform t'o'ithe "curvature of the 'rolls,"abrasiva'members adji lstably carried bysaid carrier support portionsaridlarranged to'eiigtigei'th'c "surface-s hf'isaidli'olls; .a tie-rodarraii'ged 'to e'xtendj'betweenthe rolls' land interconnecting" saidcarriers" to support the same relative to the rolls, and means ,onjsaid'tie'f'rod manually operable" to adjustf thesaid carriers relative toone another and therebyregulateithe Contact off'saidf abrasivemembers'withj shirifblls.

j' 4. In i a' portable grinding or polishing device, pair"ercs'rriersaaidstec to be posit'ioned' at opposite 's'ides of the biteof a' pair ofrollsj and having "arcu'ate support p'ortions'substantially conforming to the curvature". ofthei rolls', --saidsupport portion having recesses therein each'defined in. part, byrelatively spaced wall;v portions one of which is disposed at an angleto the other wall, an abrasive member in each recess, a Wedge shapedmember in each recess intermediate the abrasive member and saidangularly disposed Wall to clamp the abrasive member therein, means tosecure said wedge member in clamping position relative to said abrasivemember, a tie-rod arranged to extend between said rolls andinterconnecting said carriers to support the same relative to saidrolls, and means to adjust the carriers relative to one another andthereby regulate contact of said abrasive members with the surfaces ofsaid rolls.

5. In a portable grinding or polishing device, a pair of carriersadjusted to be positioned at opposite sides of the bite of a pair ofrolls and having arcuate support portions substantially conforming tothe curvature of the rolls, said support portion having recessestherein, an abrasive member in each recess, a member to clamp theabrasive member therein, a tie-rod arranged to extend between said rollsand interconnecting said carriers to support the same relative to saidrolls, and means to adjust the carriers relative to one another andthereby regulate contact of said abrasive members with the surfaces ofsaid rolls.

6. In a portable grinding or polishing device, a pair of carriersadjusted to be positioned at opposite sides of the bite of a pair ofrolls and having arcuate support portions substantially conforming tothe curvature of the rolls, said support portion having recessestherein, an abrasive member in each recess, a clamp member to secure theabrasive member therein, a tie-rod arranged to extend between said rollsand interconnecting said carriers to support the same relative to saidrolls, and a threaded member associated with each of said carriersupport por tions and engaging said clamp member operable to advance andretract the latter relative to said abrasive member for respectivelysecuring and releasing the latter within said recess.

7. In a portable grinding or polishing device for rolls, a pair ofcarriers adapted to be positioned at respectively opposite sides of thebite of a pair of rolls and having arcuate support portions arrangedsubstantially to conform to the curvature of the rolls, abrasive memberscarried by said carrier support portions and arranged to engage thesurfaces of said rolls, means operable to predeterminedly position saidabrasive members individually within said slots radially with referenceto an adjacent roll, means to clamp each of said abrasive members insuch predetermined position, means arranged to extend between the rollsand interconnecting said carriers to supone another and thereby regulatethe contact of said abrasive members with said rolls.

8. In a portable grinding or polishing device for rolls, a pair ofcarriers adapted to be positioned at respectively opposite sides of thebite of a pair of rolls and. having support portions for abrasivemembers disposed adjacent the surfaces of said rolls, and means arrangedto extend between the rolls and interconnecting said carriers to supportthe same relative to the rolls.

9. In a portable grinding or polishing device for rolls, a pair ofcarriers adapted to be positioned at respectively opposite sides of thebite of a pair of rolls and having support portions for abrasive membersdisposed adjacent the surfaces of said rolls, a tie rod arranged toextend between the rolls and interconnecting said carriers to supportthe same relative to the rolls, and means on said tie rods manuallyoperable to adjust the said carriers relative to one another and thesurfaces of said rolls.

10. In a portable grinding or polishing device for rolls, a pair ofcarriers adapted to be positioned at respectively opposite sides of thebite of a pair of rolls and having support portions for abrasive membersdisposed adjacent the surfaces of said rolls, abrasive members carriedby said support portions and arranged to engage the surfaces of saidrolls, a tie rod arranged to extend between the rolls andinterconnecting said carriers to support the same relative to the rolls,and means on said tie rods manually operable to adjust the said carriersrelative to one another and said rolls.

WILLIAM HENRY WILKES.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 597,518 Winters Jan. 18, 18981,204,450 Joseph et al Nov. 14, 1916 1,357,207 White Oct. 26, 19201,873,330 Rottler Aug. 23, 1932 FOREIGN PATENTS Number Country Date 7742,435 France Dec. 27, 1932

